NTP Server Configuration-

Unanswered Question
May 31st, 2010
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Dear All,


          I am having doubt in NTP.Can anyone clarify my doubts.


1.How many NTP Servers can i pointed out NTP server prefer in core switch 6513?

2.shall i give two core routers loop back ip as NTP server prefer?..(I have configured NTP settings in Core Router)

3.when i am giving in Switch# sh ntp associations

      address         ref clock     st  when  poll reach  delay  offset    disp
~127.127.7.1      127.127.7.1       7     5    64  377     0.0    0.00     0.0
  10.175.135.12    .GPS.             1   26d    64    0    24.0  21259.  16000.
+~10.234.173.38    10.175.135.12     2    22    64  377     4.0    8.75     0.7
*~10.234.173.37   10.175.135.12     2    21    64  377    -0.0   14.27     0.4
* master (synced), # master (unsynced), + selected, - candidate, ~ configured


Customer is asking why you are giving same reference clock for the two routers?Can you change this into two Server IP?..


How i can change that ip?


What i have to do?


Tks&Rgds

Senthil

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Leo Laohoo Mon, 05/31/2010 - 15:44
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shall i give two core routers loop back ip as NTP server prefer?

It will work and it doesn't hurt. 
Ganesh Hariharan Mon, 05/31/2010 - 23:36
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Dear All,


          I am having doubt in NTP.Can anyone clarify my doubts.


1.How many NTP Servers can i pointed out NTP server prefer in core switch 6513?

2.shall i give two core routers loop back ip as NTP server prefer?..(I have configured NTP settings in Core Router)

3.when i am giving in Switch# sh ntp associations

      address         ref clock     st  when  poll reach  delay  offset    disp
~127.127.7.1      127.127.7.1       7     5    64  377     0.0    0.00     0.0
  10.175.135.12    .GPS.             1   26d    64    0    24.0  21259.  16000.
+~10.234.173.38    10.175.135.12     2    22    64  377     4.0    8.75     0.7
*~10.234.173.37   10.175.135.12     2    21    64  377    -0.0   14.27     0.4
* master (synced), # master (unsynced), + selected, - candidate, ~ configured


Customer is asking why you are giving same reference clock for the two routers?Can you change this into two Server IP?..


How i can change that ip?


What i have to do?


Tks&Rgds

Senthil

Hi Senthil,


Reference clock here is the local switch which is acting as ntp server for other clients in your network, so it is showing as assoicted with the following ip address with self as ref clock.


You can create another ntp server in your network as a backup for primary.


Hope to Help !!


Ganesh.H


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